| Issue |
EPJ Web Conf.
Volume 158, 2017
The XXIII International Workshop “High Energy Physics and Quantum Field Theory” (QFTHEP 2017)
|
|
|---|---|---|
| Article Number | 03013 | |
| Number of page(s) | 13 | |
| Section | Theoretical and Experimental Studies of Flavor Physics and Exotic States | |
| DOI | https://doi.org/10.1051/epjconf/201715803013 | |
| Published online | 24 October 2017 | |
https://doi.org/10.1051/epjconf/201715803013
Observation and investigation of πK atoms
1 D. V. Skobeltsyn Institute of Nuclear Physics, M. V. Lomonosov Moscow State University, Leninskie Gory 1, 119991 Moscow, Russia
* e-mail: valeri.yazkov@cern.ch
Published online: 24 October 2017
There is accurate relation between lifetime of atoms, consisting of pion and kaon, and a difference of S-wave pion kaon scattering length with isospin 1/2 and 3/2: |a1/2 - a3/2 |. This difference is predicted by low energy QCD. Experiment DIRAC at CERN PS detects 349 ± 62 pairs from K+π− and π+K− atoms and make observation of exotic atoms consist of pion and kaons and provides way for measurement of pion-kaon scattering length difference and check of theoretical predictions.
© The authors, published by EDP Sciences, 2017
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